Thanks for the FCG info. I was thinking of something like that but just using square tubing since I don't have any machining equipment.
I was thinking that about the receiver but had to ask.
And after seeing the internals I have to say WOW that is some really nice work, you did a great job on this.

Outstanding, as usual.....................

DT, you never cease to amaze me with the guns you design. Only wish I had time to build one of all of each!! Still haven't had time to finish the two MG47s based on your version of them. Too busy making Crankfires. But since I do have some RPD topcovers, may just have to try the 5.45 cal. The ammo is surely cheap and plentiful enough!! Keep up the fine work!!!